Speaker Mounting Rail Lock for Vibration-Resistant Attachment
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Solution Overview
Problem
Existing mounting tools for devices like speakers on walls are complex to install and remove, and they do not effectively prevent unintentional falling due to vibrations or impacts.
Innovation Solution
A mounting tool comprising a female member with inclined engagement grooves and a male member with complementary rail portions and locking projections, allowing for secure attachment and easy detachment while preventing unintended separation, formed by bending a metal plate with specific geometric features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a lock lever with lever fixing screw is used to prevent device falling, then reliability is improved, but device complexity increases and ease of operation deteriorates
Solution Approach 1:
The patent extracts the locking function from a complex multi-component system (lock lever + fixing screw) and integrates it into a simple elastic projection structure within the engagement groove. The elastic projection automatically engages with the rail portion to provide locking without requiring separate locking components or assembly steps.
Solution Approach 2:
The elastic projection automatically performs the locking function through its own elasticity when the rail portion is inserted into the engagement groove. The system self-locks without requiring external intervention, lever manipulation, or screw tightening. For removal, the user simply pulls the device, and the elastic projection automatically releases when the rail portion exits the groove.
2Reliability
If a lock lever with lever fixing screw is used to prevent device falling, then reliability is improved, but ease of operation deteriorates
Solution Approach 1:
The patent removes the complex lock lever mechanism and replaces it with a passive elastic projection that automatically engages and disengages. The locking function is extracted from an active mechanical system and embedded into the groove structure itself, eliminating the need for manual locking operations during both mounting and removal.
Solution Approach 2:
The elastic projection provides automatic locking during mounting and automatic unlocking during removal. The system serves itself by using the insertion motion to engage the lock and the removal motion to release it, without requiring any additional user actions beyond the basic insert and pull movements.
3Ease of operation
If inclined engagement grooves are used, then ease of operation is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent specifies a moderate inclination angle range (5° to 20°) that balances operational ease with manufacturing feasibility. This parameter optimization allows the grooves to provide smooth guiding and self-aligning during insertion while remaining within standard manufacturing tolerances for conventional fabrication processes.
Data Source
AI summary
A mounting tool includes a female member and a male member. The female member has first and second engagement grooves that arc inclined such that a distance therebetween increases toward one side, and a female-side locking projection disposed adjacent to the first engagement groove and protruding to a side of the second engagement groove. The male member has first and second rail portions that are simultaneously fittable into the first and second engagement grooves, and a male-side locking projection disposed adjacent to the first rail portion. The male-side locking projection is disposed so as to interfere with the female-side engagement protrusion while the first and second rail portions that are being fitted into the first and second engagement grooves move in an intermediate axis direction, and so as not to interfere with the female-side locking projection while the second rail portion is being slid along the second engagement groove.